Nail



F. P. LEONARD NAIL Filed Jan. 25, 1923 Y l Snobs/hw TE-:ank E Lennard.

Patented Oct. 20, 1925.

-. UNITED -srilvrizs rmx?. LEONARD, or TROY', NEW YORK, Assmnon or @Nn-HALF 'ro FREDERICK c'.

PATENT. omer.,

Y vGL'AIESSENS, OF TROY, :NEW YQRK,

NAIL'.

V Application mammary 25, 1923. 'serial np. New. 'l

useful Improvements in Nails, of which the following is a specication.

This invention relates to improvements in vnails or analogous fastening elements.

1,5- A further object of this invention is the *TJ-The primary object of this invention is `-the -provisionof a nail part1cularly well y l A:adapted for the securing of composition wall materials, such as plaster board, fiber,board, wood board, and the like.

#provision of a fasteningv elementi'J embodying a. novel head arrangement upon which a finfishin surfacing may anchor, without liabilf ity o dropping therefrom incident to usual ,29. `shocks and vibrations. v

further objectfof this inventionv is lthe vprovision of a nails or'analogous fastening .element which is adapted to interlock with .v'" an article 'into which the sameis driven, in- 5 such manner as to prevent the same from.

.working loose incident to Y, ordinary s hock I proved nail.

A o r analogous framing B, as by means of the.

and vibration.

`#Other objects and ladvantages of this 1nvention will be ap arent during' the course fof the following etailed description.. v'In the accompanying drawing, forming a art of this specification, andwherein simiar referencel characters designate corresponding parts throughout the several views'. Figure 1v is a perspective View of the lm proved nail. i o

`Figure 2 is a side elevation of the 1m- Figure 3 is a cross sectional view, taken through a. composition wall material, such as v plaster board, showing the manner 1n which the same is secured upon studding or analo- -pgous foundation members, by means of the novel fastening nails. y In the drawing, wherein for the purpose illustration is shown but the preferred "embodiment of this invention, the letter' A generally designates plaster, fiber, or analogens composition wall or board material,v which is adapted for attachment lto studding improved fastening :elements or nails C.

is wellknown to c trpenters, plasterers, and others, skilled in bul dmgconstructlon,

l'of New York, have invented certain new and very difficult to maintain'in secure and durable manner upon studdlng and analogous framing, primarily incident to the'fact that nails which ordinarilyfasten the vsame work loose either during Athe attachment of the -composition board or wall material,-or vincident to shocks or vibrations of the wall material which-are placed upon the same when placing the trim, 4finishing coatings, or performing otherv ,like operations.

ing engagement of the head of theordinary l fastening nail' therewith.

AReferring to the construction of the improved -fasteningf`elementl C, the same includes av shank 10, preferably cylindrical, and of any desired length, `having the inserting end 11`tl1ereof pointed, and having a relatively'wide head 12 on theopposite end thereof. I

The shank 10 is providedwith a rib 15, spiralled about the outer surface thereof, intermediate the pointed end 11 and head 12. for substantially one lquarter of a turnabout the shank. This rib 15 may be wedge shaped in cross section and the lower end 16 thereof is preferably tapered into the'outer surface of the shank 10, in-spaced relation above the shank point 11, At the upper end of the spiral rib 15, the vsame. provides a flat face 17, preferably disposed inv a plane parallel with the shank or axis thereof. Above the spiral rib 15 diametrically opposed barbs 20 and 21 are preferably provided, which may be polygonal in formation, and providing upper rather abrupt shoulders 23 in facing relation toward thenail head 12. The lower rear surfaces of the barbs 20 and 21 may taper into the shank 10 in any approved manner. The barb 20 is preferably directlyv above the upper end of the spiral rib 15.

The barbs 20 and 21 each provide faces 29, v

which are preferably-in" the same plane with the face.117"of the spiral rib 15, facing in the same directiony therewith.V ,lf-heup'perVV without undue restriction by the barbs and without liability of excessive mutilation of- 55 that composition board or the fiber of the material in whlch-'the nail ,im

is driven.v It is to be noted that the spiral rib 15 is substantially midway of the barbs and the pointed'end 11 of the shank 10, whilethe barb shoulders 23 themselves are 5 spaced below the nail head 12 for a considerable distance.

The head 12 of the improved nail C is of novel formation, being particularly designed with the end in yView of anchoring a finish- 'J ing coating of material thereon. To this end, the head 12 is relatively Wide, andy is 'preferably provided with three `ianges 31 upturned from the plane of the top surface of' the head 12; said flanges 31 preferably 15 heilig slightly arcuate over the top surface of the head 12, substantially as is illustrated in Figure 2 of the drawing.

vThe function of the nail in maintaining M the composition wall material upon studdinger other framing is illustrated in Figure 3 of the drawing. The nail uponI being driven into the studding B is rotated, byy engagement of the spiral rib 15 with the wood fibers, for substantially 900, and after the barbs. T20 and 21 have, passed .into the material of/tlie stud B', the same will neatly cut lthe fiber of the wood, without unduly mutilating the same, and merely pushfthe v fibers back, so that said fibers will spring in closing. relation over the shoulders 23 of the barbs 2O and 21, when the nail is Ventire-y i 1y driven, as is illustrated in Figure 3. `The K head 12 o f the nail may be slightlycounter- ,sunk in to the outer surface of the composi- '35 tion wall or board material A, substantially as is illustrated in Figure 3, and be retained in such eountersunk relation incident to the effective locking function of the nail in the l studding B. A coating of finishing mate- 40 rial, such as plastering, varnishing, veneering, etc., may then be readily spread over vprohibitive.

Various changes in the shape, size, and arrangement of parts may be made to the form of invention herein shown and described, without departingl from the spirit ofthe invention -or the scope of the claims.

1. As anyarticle of manufacture, a nail having a shank portiomand a heady'pvortion, said head portion beingrelatively `Wide and having a plurality of lianges outturned from the plane. ofthe top surface thereof, and arcuately bent to overliejsaid top surface. L

T2.v As an article of manufacture, a securing member includinga shank and head in(l rigid connection, the headhaving anchoring, flanges extending from the side thereof opal posite to said shank,.said flanges being later-i ally overturned from thenormal top surface of'said head. y 3. A nail `comprising a`` shank, and a headfl rigidwith the shankhaving marginal por-l, 7E 1" tions outturned from vtheplane of the topf` surface of said head ait-,the opposite side of the head from said shank, said marginal` outturned portions being bent inwardly in facing relation to overlie said top surface of the head. f

FQRANK PQLEONARD. 

